The 2017 Buick Envision is offered in several trim levels. The Base Envision, Preferred and Essence trims are powered by a 2.5L 4-cylinder that makes 191 horsepower and 192 pound-feet of torque. In these trims, front-wheel-drive is standard, though all-wheel-drive is optional, with power supplied through a 6-speed automatic transmission. Upper-tier Premium and Premium II trims come with a turbocharged 2.0L 4-cylinder, which produces 252 horsepower and 260 pound-feet of torque and powers all four wheels through a 6-speed auto. So equipped, the Envision boasts strong acceleration for its class, even if it's not sports car-quick. The Base Envision and Preferred trims offer standard 18-inch alloy wheels, daytime running lights, a rear vision camera with parking assist, premium cloth seating surfaces with heated front seats, a hands-free power liftgate, dual-zone automatic climate control, Buick IntelliLink with phone integration, 4G WiFi hotspot capability, and more. The Essence trim adds chrome roof rails, perforated leather seating with heated front and rear seats, 8-way power-adjustable front seats with a memory system for the driver's seat and mirrors, a heated leather steering wheel, tri-zone automatic climate control, and alerts for blind spots and lane changes. In the Premium trim, buyers get standard all-wheel drive, 19-inch alloy wheels, HiPer Strut front suspension, rain-sensing wipers, a Bose 7-speaker sound system, an 8-inch color driver information display, forward collision alert and a lane departure warning with lane keep assist. Finally, the Premium II trim boasts articulating HID headlights with automatic dimming, automatic park assist, a cooled driver's seat, navigation and a head-up display. Options on the Buick Envision include a power-sliding panoramic moonroof and adaptive cruise control. Buick has paid particular attention to the safety features available on the Envision. Beyond the expected airbags, anti-lock brakes, traction control and stability control, the Envision offers a strong set of safety enhancements across the range. Lane keep assist, blind spot warning, a rear cross traffic alert system, a rearview camera and what Buick is calling a "Safety Alert Seat" which will pulse to alert the driver of a possible crash are all standard. The Buick Envision is also available with a surround vision system which uses various cameras mounted around the vehicle to give the driver an unobstructed view of their surroundings.